Refactor logging in agent loop, improve memory handling in cron service, and update job reminder message format

Author: maidang-xing

agent/agent_loop.c

@@ -605,8 +605,6 @@ OPERATE_RET agent_loop_init_evt_cb(void *data)
     ai_mcp_server_set_tool_exec_hook(__on_tool_executed, NULL);
 
     PR_DEBUG("Agent loop initialized");
-    PR_INFO("Device Free heap %d", tal_system_get_free_heap_size());
-    PR_INFO("Agent loop stack size %d", DUCKY_CLAW_AGENT_STACK);
 
     THREAD_CFG_T thrd_param = {0};
     thrd_param.stackDepth = DUCKY_CLAW_AGENT_STACK;

cron_service/cron_service.c

@@ -330,6 +330,12 @@ static void cron_process_due_jobs(void)
                 PR_WARN("Cron overdue: '%s' (%s) missed by %llds", job->name, job->id,
                         (long long)late_secs);
                 char *msg = (char *)claw_malloc(512);
+                if (!msg) {
+                    PR_ERR("cron: malloc failed for overdue msg");
+                    job->enabled = false;
+                    changed = true;
+                    continue;
+                }
                 snprintf(msg, 512,
                          "[Task Overdue] Task '%s' (id=%s) was scheduled at epoch %lld "
                          "but missed its trigger window by %llds. "
@@ -342,15 +348,10 @@ static void cron_process_due_jobs(void)
                 im_msg_t im = {0};
                 strncpy(im.channel, "cron", sizeof(im.channel) - 1);
                 im.content = msg;
-                if (im.content) {
-                    (void)message_bus_push_inbound(&im);
-                } else {
-                    PR_ERR("cron: malloc failed for overdue msg");
-                }
+                (void)message_bus_push_inbound(&im);
                 /* Disable so it is not reported again on the next check */
                 job->enabled = false;
                 changed = true;
-                claw_free(msg);
                 continue;
             }
         }

tools/tool_cron.c

@@ -551,7 +551,7 @@ OPERATE_RET tool_cron_register(void)
         "- name (string): Descriptive name for the job.\n"
         "- schedule_type (string): 'every' for recurring or 'at' for one-shot.\n"
         "- message (string): Message content to send when the job fires.\n"
-        "The message content is a reminder to the user to complete the task of naming, using a reminder tone."
+        "  Write it as a friendly reminder that prompts the user about the scheduled task.\n"
         "- interval_s (int): Interval in seconds (required for 'every' type).\n"
         "For 'at' type, use this workflow:\n"
         "  1. If the request is relative (e.g. 'in 5 minutes'), call get_current_time first.\n"